Application of permanganate in the oxidation of micropollutants:a mini review  

作　　者：Xiaohong GUAN Di HE Jun MA Guanghao CHEN 

机构地区：[1]State Key Lab of Urban Water Resource and Environment(HIT),Harbin Institute of Technology,Harbin 150001,China [2]Department of Civil and Environmental Engineering,Hong Kong University of Science and Technology,Kowloon,Hong Kong,China

出　　处：《Frontiers of Environmental Science & Engineering》2010年第4期405-413,共9页环境科学与工程前沿（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.21077029);by the Megaprojects of Science Research for Water Environment improvement(Nos.2009ZX07424-005 and 2008ZX07421-002).

摘　　要：As a green oxidant,permanganate has received considerable attention for the removal of micropollutants in drinking water treatment.To provide a better understanding of the oxidation of organic micropollutants with permanganate,the oxidation kinetics of 32 micropollutants were compiled.The pollutants include algal toxins,endocrine disrupting chemicals(EDCs),and pharmaceuticals.The oxidation kinetics of micropollutants by permanganate were found to be first order with respect to both contaminant and permanganate concentrations from which second-order rate constants(k″)were obtained.Permanganate oxidized the heterocyclic aromatics with vinyl moiety(i.e.,microcystins,carbamazepine,and dichlorvos)by the addition of double bonds.For the polycyclic aromatic hydrocarbons(PAHs)with alkyl groups,permanganate attacked the benzylic C-H through abstraction of hydrogen.The mechanism for the oxidation of phenolic EDCs by permanganate was a single electron transfer and aromatic ring cleavage.The presence of background matrices could enhance the oxidation of some phenolic EDCs by permanganate,including phenol,chlorinated phenols,bisphenol A,and trichlosan.The toxicity of dichlorvos solution increased after permanganate oxidation,and the estrogenic activity of bisphnol A/estrone increased significantly at the beginning of permanganate oxidation.Therefore,the toxicity of degradation products or intermediates should be determined in the permanganate oxidation processes to better evaluate the applicability of permanganate.The influence of background ions on the permanganate oxidation process is far from clear and should be elucidated in the future studies to better predict the performance of permanganate oxidation of micropollutants.Moreover,methods should be employed to catalyze the permanganate oxidation process to achieve better removal of micropollutants.

关 键 词：pharmaceuticals endocrine disrupting chemicals(EDCs) algal toxins PERMANGANATE OXIDATION 

分 类 号：O61[理学—无机化学]